Default ProgressDialog in Android Looks like :
<style name="MyAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="colorAccent">@color/orange</item> <--define your color here-->
</style>
Now in .java class define your custom style for ProgressDialog like this : ProgressDialog progressDialog = new ProgressDialog(this , R.style.MyAlertDialogStyle);
progressDialog.setMessage("Please wait ...");
progressDialog.show();
output :